L67 DTC P1671 from 99 Grand Prix

[brninitdwn]

Hey everyone, I'm new to the site and researching a DTC code. Have any of you had any experience what the P1671 code means? I have been able to find that it is for driver 4 line 1 with my online search but no definitive answer as to what that pertains to. I also found it could be a bad Check Engine Light Circuit, bad PCM or bad wiring (PCM circuit wiring section 71). Thanks so much for any input on where to go from here!

EDIT - What started my research was the engine suddenly dying after a short period and being unable to start, this code appeared in the ODBII readout. Thanks again!

 

[fst4dr]

P1671 MIL Control Circuit Malfunction - With Automatic Transmission

sounds like there is a problem with your mil light circuit I would start testing some connections if the bulb is working if not then i am guessing it is a burnt out bulb

also check fuse 12 in the under hood fuse panel as it relates to that circuit

This can also be caused by a bad pcm so if you have changed it recently or have a spare to swap and try than you could do that.

 

[machinegunsquid]

My car threw the same code the minute I swapped out my PCM...never had any problems though...

fst4dr, thats great info...hours of searching didnt even find that for me.

 

[brninitdwn]

Thanks for that, that is great info. Since the lamp in the dash is illuminating I'll take a guess that it is the PCM, since this issue with it randomly shutting off has been around for a bit but not consistently like it is now, all fuses look good, and all the wiring seems to be secure with no corrosion or breaks. I appreciate your help!

 

[fst4dr]

not a problem of course it was pretty easy for me but that's part of having access to tech resources